I have made an expirement that is still in progress. I normally play on EU server(4years), but I wanted to try out na server, because I always see free bonus codes for na but no for EU. I have made an account, downloaded the na game, and learnt many things about it. first I noticed that queue times are on avg 2 mins, which is insane, I normally waited 10s on EU server. Second thing, you get way better invite codes, I got Churchill III and 1000 gold, and extra 500 from training, so I can already buy tier 5 premium, and best thing of all, on na server people are way less toxic, and they are more talkative then on EU. If you type 2 words, like "take hill" if you lose you get private message how you are a tomato and etc. And because my account is new, I play with bots a lot which I don't like, because when you play with Churchill, and you're the only real player, and the other real guy on enemy team is just a new player, you dominate the battle and farm damage. I still think it's nicer on na server.
Source: https://www.reddit.com/r/WorldofTanks/comments/xr58q4/my_expirement/